Weather in Thunder Bay, Canada
Historical monthly conditions · 2021–2025
Monthly averages
Average daily air-temperature lows/highs and peak wind gusts. Rain is the average monthly total.
| Month | Avg low | Avg high | Rain | Cloud cover | Avg peak gust |
|---|---|---|---|---|---|
| January | -16°C | -8°C | 26.6 mm | 69% | 37.7 km/h |
| February | -18°C | -7°C | 37.1 mm | 65% | 40.0 km/h |
| March | -10°C | 0°C | 50.8 mm | 63% | 40.5 km/h |
| April | -3°C | 5°C | 96.8 mm | 69% | 41.8 km/h |
| May | 4°C | 14°C | 56.0 mm | 56% | 35.7 km/h |
| June | 10°C | 19°C | 78.9 mm | 58% | 34.9 km/h |
| July | 13°C | 22°C | 69.2 mm | 52% | 33.4 km/h |
| August | 13°C | 22°C | 59.3 mm | 55% | 36.1 km/h |
| September | 10°C | 18°C | 62.1 mm | 55% | 35.4 km/h |
| October | 4°C | 12°C | 48.6 mm | 65% | 39.5 km/h |
| November | -3°C | 3°C | 52.8 mm | 76% | 45.6 km/h |
| December | -12°C | -4°C | 61.4 mm | 79% | 43.7 km/h |
Weather match by month
Feels like 15°C–30°C · cloud ≤60% · rain ≤0.1 mm/h · gust ≤50 km/h
Feels-like temperature accounts for humidity and wind in shade. Percentages cover 08:00–20:00 local solar time.
| Month | Match rate | |
|---|---|---|
| January | 0.0% | |
| February | 0.0% | |
| March | 0.0% | |
| April | 0.0% | |
| May | 7.4% | |
| June | 27.0% | |
| July | 46.5% | |
| August | 40.4% | |
| September | 24.4% | |
| October | 3.3% | |
| November | 0.0% | |
| December | 0.0% |
About this location and data
- Population
- 108,843
- Elevation
- 323 m
- Coordinates
- 48.38°N, 89.25°W
2021-2025 recent-weather sample (not a 30-year normal).
How the weather scores are calculated